Worn gaming chair

Listen up, numbskull. This guy's chair is all chewed up, and he thinks his roommate's butt is doin' it 'cause it's got teeth! Now, you probably don't know much about human anatomy, but people don't have teeth in their butts! So, basically, it's a joke about a gross thing happening and blaming it on something ridiculous. Are you keeping up or are you gonna drool on yourself?